Abstract
The influence of relaxation effects on the solvatochromic shifts observed in the electronic spectra of organic compounds in solvents is investigated using quantum-chemical methods. The calculations are performed in the framework of the time-dependent density functional theory. It is revealed that, in 40% of the cases under consideration, the relaxation contribution accounts for more than 20% of the total solvatochromic shift. The most pronounced effects are associated with the observed changes in the dihedral angles between molecular fragments.
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